<template>
    <div class="cmt-container">
        <hr>
        <textarea v-model="msg" name="" id="" cols="10" rows="3" maxlength="120" placeholder="请输入要评论的内容(最多吐槽120字)">

        </textarea>
        <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>
        <div class="cmt-list">
            <div class="cmt-item" v-for="(item, index) in comments" :key="item.id">
                <div class="cmt-title">
                    第{{index+1}}楼&nbsp;&nbsp;用户:{{item.user_name}}&nbsp;&nbsp;发表时间{{item.add_time | dateFormat}}
                </div>
                <div class="cmt-body">
                    {{item.content == 'undefined' ? '此用户很懒什么也没说' : item.content}}
                </div>
            </div>
        </div>
        <mt-button type="danger" size="large" @click="getMore">加载更多</mt-button>
    </div>
</template>

<script>
import { Toast } from 'mint-ui'
export default {
    data() {
        return {
            pageIndex:1,
            comments:[],
            msg:''
        }
    },
    props:['id'],
    created() {
        this.getComment()
    },
    methods:{
        //加载评论
        getComment(){
            this.$http.get('api/getcomments/' + this.id + "?pageindex=this.pageindex").then(result=>{
                if(result.body.status == 1){
                    this.comments = this.comments.concat(result.body.message)
                    console.log(this.id)
                }else{
                    Toast('加载评论失败')
                }
            })
        },
        //加载更多
        getMore(){
            this.pageIndex++;
            this.getComment();
        },
        //发表评论
        postComment(){
            if(this.msg.trim().length == 0){
                Toast('发表评论失败,内容不能为空')
            }else{
                this.$http.post('api/postcomment/' + this.id,{ content:this.msg.trim() }).then(result=>{
                    if(result.body.status == 0){
                        const cmt = {
                            user_name:'匿名用户',
                            add_time:Date.now(),
                            content:this.msg.trim()
                        };
                        this.comments.unshift(cmt);
                        this.msg = ''
                    }
                })
            }
        }
    }
}
</script>

<style lang="scss" scope>
.cmt-container{
    h3{
        font-size:18px;
    }
    textarea{
        font-size:13px;
        margin:0;
    }
    .cmt-list{
        margin:5px 0;
        .cmt-item{
            font-size:13px;
            .cmt-title{
                line-height:30px;
                background:#ccc;
            }
            .cmt-body{
                line-height:30px;
                text-indent:2em;
            }
        }
    }
}
</style>